Improved paddle-wheel



@with tang aitrat @Hita WILLIAM GOODWIN, or BOSTON, MASSACHUSETTS.

I Letters Patent No. 70,034, dated October' 22,1367.

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T() ALL PERSONS 'lO WI-IOM llIESE PRESENTS MAY COME:4

Be it known that I, WILLIAM GOODWIN, of Boston, in the county ofSuffolk, and State of Massachusetts, have `invented a now and usefulimprovement in Paddle-Wheels for Steam-Vessels; and do hereby declarethe same to be fully described in the following specification, andrepresented in the accompanying drawingsf, oi` which i Figure 1 is a topview,

Figure 2 a Side elevation, and

Figure 3 a longitudinal section of a Sector of a paddle-wheel, made inaccordance with my invention.

p The common paddle-wheel having floats going square across it,is-liable, while in operation, to the serious objection of lifting agreat? amount of water, such quantity of water being by its weight amaterial impediment Vto the wheel, and requiring' a large exertion ofpower for overcoming or c'ounteracting it.

In the construction of my improved wheel I have .sought to avoid thisdifculty, or, in other words, to so make thenvheel as to cause it, whilerevolving in water, to raise or lift little if any thcreof.`v

To accomplish this, I employ two series of floats or paddles, andarrange each oat of each series obliquely with rcfcrcnce to the sideframes of the wheel, and also so that each float of one series shallcross another float of the next series diagonally, both floats, at theirmiddles, being fixed to one common radial arm. Furthermore, `one .floatof .the .pair has .its inneredge :xt or. about at the sanie distancefrom the axis of the Wheel as is the outer edge of' the other iioat ofsuch pair, tlie whole being as represented in the accompanying drawings,in which A-and B are the side frames of the wheel, each of Whichiscomposed of a hub, a, a series of radial rods or spokes, b b 6, c c c,&c., and two annuli d e, arranged as shown in fig. 2.

The outermost series of floats is shown at C C C, 87e., and theinnermost series at D D D, 35o.` Between the two frames A B is anintermedia-teer third frame, E, composed of a hub, d', a series ofradial arms, e e e',

.and an annulus`,f.

Each paddle or oat O vru'ns obliqucly across thc wheel, in a directionopposite that of its fellow-paddle or oat D. In consequence 'of this,while the paddle may he in revolution in water, and both paddles areimmersed therein, `each `of them lwill deflect the water from it in adirection laterally ofthe wheel, the water being deiiectcd from onepaddle in one direction, and from the other inthe opposite direction. Inpractice, ithas been found that scarcely any waterwill bc lifted by thewheel, the chances for escape of the back water from the oats being sovcryrgreat. By having two series of oblique oats or paddles, and thoseof one series arranged diagonally with respect to those of the other,the lateral strain on'the wheel, effected by either series, will-bccounter-acted by those produced 'by the other.

Although, in theory, there would bea loss of power in the action of thiswheel, with reference to the common paddle-wheel, having a single Vsctof oats square to its sides, (each float having an area equal to thecombined areas of the two floats of a pair in my said improved wheel,)yet, practice has proved that, owing to the small amount of back waterlifted byzny wheel, there is a material gain of useful effect, and itrequires less power to opera'te it, to obtain the same result, than canbo effected by the said common wheel. n

The outer paddle of eachpair is attached ut its ends to two of theradial arms I) b of the side frames A B; the inner paddle of the pairboingconnected at its ends to two ofthe auxiliary or shorter arms c c ofsuch frames.

What I claim as my invention, isy Thewheel, or combination `as composedof the three frames A B E, made as described, and of the two series ofpaddles C D, having the paddles of cach sericsarranged obliquely in thewheel, and diagonally and in other respects with regard to' thseof thcother series, as explained, and also having each pair, C D, of such lpaddles united at their middles t0` one of the spokes 0r arms oftheintermediate frame E, the whole being substantially as specified.

` WILLIAM GOODWIN.

Witnesses: i

It. H. EDDY, SAMUEL N. Pirna.

